2. According to the Paper Aircraft Association, a paper airplane thrown in space will not fly; it will float in a straight line. Unless it hits an object, it could literally float forever (see Resources). Wingspan 3. The record wingspan of a paper airplane is 40 feet and 10 inches. The craft flew over 114 feet before crashing into a wall. Education 4. Scientists, engineers and students use paper airplanes to study aerodynamics.
Any type of trauma or injury to the testicles can cause severe pain and discomfort. The most common mechanism of testicular trauma occurs from blunt trauma (~85%), which can occur from sports injuries, a direct kick to the area, car accidents, and straddle injuries.
Nearly all testicular lumps cause noticeable swelling and changes in the texture of your testicle. Other symptoms vary, depending on the underlying cause of your testicular lump: A varicocele rarely causes symptoms. If it does cause symptoms, the affected testicle may feel heavier than the other testicle or the lump may feel like a small sac of worms. A hydrocele is painless in infants, but it can cause a feeling of abdominal pressure in older boys and men.